<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>
<script>
	console.log(sum(1,3));
	function sum(num1,num2){
		return num1 + num2;
		
	};
	
	console.log(fn(1,3));
 var fn =function sum(num1,num2){
		return num1 + num2;
		
	};
	</script>

<body>
</body>
</html>
